diff --git a/.github/workflows/build-test.yaml b/.github/workflows/build-test.yaml
index 54f1b8ce..9f9fb3b6 100644
--- a/.github/workflows/build-test.yaml
+++ b/.github/workflows/build-test.yaml
@@ -101,13 +101,17 @@ jobs:
       needs.paths-filter.outputs.codechange == 'true' ||  needs.paths-filter.outputs.graphchange == 'true'
     name: "E2E Tests"
     runs-on: "depot-ubuntu-24.04-8"
+    env:
+      # the bot PAT is what allows pushing the validated graph back to the
+      # branch; it is unavailable to pull requests from forks
+      CAN_PUSH_GRAPH: "${{ secrets.AUTHZED_BOT_PAT != '' }}"
     steps:
       - uses: "actions/checkout@v6"
         if: |
           needs.paths-filter.outputs.graphchange == 'true'
         with:
           submodules: true
-          token: "${{ secrets.AUTHZED_BOT_PAT }}"
+          token: "${{ secrets.AUTHZED_BOT_PAT || github.token }}"
           repository: "${{ github.event.pull_request.head.repo.full_name }}"
           ref: "${{ github.event.pull_request.head.ref }}"
       - uses: "actions/checkout@v6"
@@ -140,7 +144,7 @@ jobs:
       - name: "Commit validated update graph"
         uses: "EndBug/add-and-commit@v9"
         if: |
-          steps.verify-changed-graph.outputs.files_changed == 'true'
+          env.CAN_PUSH_GRAPH == 'true' && steps.verify-changed-graph.outputs.files_changed == 'true'
         with:
           committer_name: "GitHub Actions"
           committer_email: "41898282+github-actions[bot]@users.noreply.github.com"
diff --git a/proposed-update-graph.yaml b/proposed-update-graph.yaml
index 7ee23b26..9efd6cc8 100644
--- a/proposed-update-graph.yaml
+++ b/proposed-update-graph.yaml
@@ -386,6 +386,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.38.0:
     - v1.39.1
     - v1.40.1
@@ -397,6 +398,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.39.1:
     - v1.40.1
     - v1.42.1
@@ -407,6 +409,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.40.1:
     - v1.42.1
     - v1.45.4
@@ -416,6 +419,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.42.1:
     - v1.45.4
     - v1.47.1
@@ -424,6 +428,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.45.4:
     - v1.47.1
     - v1.48.0
@@ -431,31 +436,42 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.47.1:
     - v1.48.0
     - v1.49.2
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.48.0:
     - v1.49.2
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.49.2:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.51.1:
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.52.0:
     - v1.54.0
+    - v1.56.1
+    v1.54.0:
+    - v1.56.1
   metadata:
     datastore: postgres
     default: "true"
   name: stable
   nodes:
+  - id: v1.56.1
+    migration: populate-schema-tables
+    tag: v1.56.1
   - id: v1.54.0
     migration: populate-schema-tables
     tag: v1.54.0
@@ -1066,6 +1082,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.38.0:
     - v1.39.1
     - v1.40.1
@@ -1077,6 +1094,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.39.1:
     - v1.40.1
     - v1.42.1
@@ -1087,6 +1105,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.40.1:
     - v1.42.1
     - v1.45.4
@@ -1096,6 +1115,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.42.1:
     - v1.45.4
     - v1.47.1
@@ -1104,6 +1124,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.45.4:
     - v1.47.1
     - v1.48.0
@@ -1111,31 +1132,42 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.47.1:
     - v1.48.0
     - v1.49.2
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.48.0:
     - v1.49.2
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.49.2:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.51.1:
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.52.0:
     - v1.54.0
+    - v1.56.1
+    v1.54.0:
+    - v1.56.1
   metadata:
     datastore: cockroachdb
     default: "true"
   name: stable
   nodes:
+  - id: v1.56.1
+    migration: populate-schema-tables
+    tag: v1.56.1
   - id: v1.54.0
     migration: populate-schema-tables
     tag: v1.54.0
@@ -1763,6 +1795,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.38.0:
     - v1.39.1
     - v1.40.1
@@ -1774,6 +1807,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.39.1:
     - v1.40.1
     - v1.42.1
@@ -1784,6 +1818,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.40.1:
     - v1.42.1
     - v1.45.4
@@ -1793,6 +1828,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.42.1:
     - v1.45.4
     - v1.47.1
@@ -1801,6 +1837,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.45.4:
     - v1.47.1
     - v1.48.0
@@ -1808,31 +1845,42 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.47.1:
     - v1.48.0
     - v1.49.2
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.48.0:
     - v1.49.2
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.49.2:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.51.1:
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.52.0:
     - v1.54.0
+    - v1.56.1
+    v1.54.0:
+    - v1.56.1
   metadata:
     datastore: mysql
     default: "true"
   name: stable
   nodes:
+  - id: v1.56.1
+    migration: identifiers_case_sensitive
+    tag: v1.56.1
   - id: v1.54.0
     migration: identifiers_case_sensitive
     tag: v1.54.0
@@ -2165,6 +2213,7 @@ channels:
     - v1.49.2
     - v1.51.1
     - v1.54.0
+    - v1.56.1
     v1.38.0:
     - v1.39.1
     - v1.40.1
@@ -2175,6 +2224,7 @@ channels:
     - v1.49.2
     - v1.51.1
     - v1.54.0
+    - v1.56.1
     v1.39.1:
     - v1.40.1
     - v1.42.1
@@ -2184,6 +2234,7 @@ channels:
     - v1.49.2
     - v1.51.1
     - v1.54.0
+    - v1.56.1
     v1.40.1:
     - v1.42.1
     - v1.45.4
@@ -2192,6 +2243,7 @@ channels:
     - v1.49.2
     - v1.51.1
     - v1.54.0
+    - v1.56.1
     v1.42.1:
     - v1.45.4
     - v1.47.1
@@ -2199,31 +2251,42 @@ channels:
     - v1.49.2
     - v1.51.1
     - v1.54.0
+    - v1.56.1
     v1.45.4:
     - v1.47.1
     - v1.48.0
     - v1.49.2
     - v1.51.1
     - v1.54.0
+    - v1.56.1
     v1.47.1:
     - v1.48.0
     - v1.49.2
     - v1.51.1
     - v1.54.0
+    - v1.56.1
     v1.48.0:
     - v1.49.2
     - v1.51.1
     - v1.54.0
+    - v1.56.1
     v1.49.2:
     - v1.51.1
     - v1.54.0
+    - v1.56.1
     v1.51.1:
     - v1.54.0
+    - v1.56.1
+    v1.54.0:
+    - v1.56.1
   metadata:
     datastore: spanner
     default: "true"
   name: stable
   nodes:
+  - id: v1.56.1
+    migration: populate-schema-tables
+    tag: v1.56.1
   - id: v1.54.0
     migration: populate-schema-tables
     tag: v1.54.0
@@ -2400,6 +2463,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.3.0:
     - v1.4.0
     - v1.5.0
@@ -2443,6 +2507,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.4.0:
     - v1.5.0
     - v1.6.0
@@ -2485,6 +2550,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.5.0:
     - v1.6.0
     - v1.7.1
@@ -2526,6 +2592,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.6.0:
     - v1.7.1
     - v1.8.0
@@ -2566,6 +2633,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.7.0:
     - v1.7.1
     - v1.8.0
@@ -2606,6 +2674,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.7.1:
     - v1.8.0
     - v1.9.0
@@ -2645,6 +2714,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.8.0:
     - v1.9.0
     - v1.10.0
@@ -2683,6 +2753,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.9.0:
     - v1.10.0
     - v1.11.0
@@ -2720,6 +2791,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.10.0:
     - v1.11.0
     - v1.12.0
@@ -2756,6 +2828,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.11.0:
     - v1.12.0
     - v1.13.0
@@ -2791,6 +2864,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.12.0:
     - v1.13.0
     - v1.14.1
@@ -2825,6 +2899,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.13.0:
     - v1.14.1
     - v1.15.0
@@ -2858,6 +2933,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.14.0:
     - v1.14.1
     - v1.15.0
@@ -2891,6 +2967,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.14.1:
     - v1.15.0
     - v1.16.2
@@ -2923,6 +3000,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.15.0:
     - v1.16.2
     - v1.17.0
@@ -2954,6 +3032,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.16.0:
     - v1.16.2
     - v1.17.0
@@ -2985,6 +3064,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.16.1:
     - v1.16.2
     - v1.17.0
@@ -3016,6 +3096,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.16.2:
     - v1.17.0
     - v1.18.0
@@ -3046,6 +3127,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.17.0:
     - v1.18.0
     - v1.19.1
@@ -3075,6 +3157,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.18.0:
     - v1.19.1
     - v1.21.0
@@ -3103,6 +3186,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.19.1:
     - v1.21.0
     - v1.22.2
@@ -3130,6 +3214,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.21.0:
     - v1.22.2
     - v1.23.1
@@ -3156,6 +3241,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.22.2:
     - v1.23.1
     - v1.24.0
@@ -3181,6 +3267,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.23.1:
     - v1.24.0
     - v1.25.0
@@ -3205,6 +3292,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.24.0:
     - v1.25.0
     - v1.26.0
@@ -3228,6 +3316,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.25.0:
     - v1.26.0
     - v1.29.5
@@ -3250,6 +3339,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.26.0:
     - v1.29.5
     - v1.30.0
@@ -3271,6 +3361,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.29.5:
     - v1.30.0
     - v1.31.0
@@ -3291,6 +3382,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.30.0:
     - v1.31.0
     - v1.32.0
@@ -3310,6 +3402,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.31.0:
     - v1.32.0
     - v1.33.1
@@ -3328,6 +3421,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.32.0:
     - v1.33.1
     - v1.34.0
@@ -3345,6 +3439,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.33.1:
     - v1.34.0
     - v1.35.3
@@ -3361,6 +3456,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.34.0:
     - v1.35.3
     - v1.36.2
@@ -3376,6 +3472,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.35.3:
     - v1.36.2
     - v1.37.1
@@ -3390,6 +3487,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.36.2:
     - v1.37.1
     - v1.38.0
@@ -3403,6 +3501,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.37.1:
     - v1.38.0
     - v1.39.1
@@ -3415,6 +3514,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.38.0:
     - v1.39.1
     - v1.40.1
@@ -3426,6 +3526,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.39.1:
     - v1.40.1
     - v1.42.1
@@ -3436,6 +3537,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.40.1:
     - v1.42.1
     - v1.45.4
@@ -3445,6 +3547,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.42.1:
     - v1.45.4
     - v1.47.1
@@ -3453,6 +3556,7 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.45.4:
     - v1.47.1
     - v1.48.0
@@ -3460,31 +3564,41 @@ channels:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.47.1:
     - v1.48.0
     - v1.49.2
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.48.0:
     - v1.49.2
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.49.2:
     - v1.51.1
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.51.1:
     - v1.52.0
     - v1.54.0
+    - v1.56.1
     v1.52.0:
     - v1.54.0
+    - v1.56.1
+    v1.54.0:
+    - v1.56.1
   metadata:
     datastore: memory
     default: "true"
   name: stable
   nodes:
+  - id: v1.56.1
+    tag: v1.56.1
   - id: v1.54.0
     tag: v1.54.0
   - id: v1.52.0
diff --git a/tools/generate-update-graph/main.go b/tools/generate-update-graph/main.go
index 2d24c3b3..bda3e967 100644
--- a/tools/generate-update-graph/main.go
+++ b/tools/generate-update-graph/main.go
@@ -44,6 +44,7 @@ func main() {
 
 func postgresChannel() updates.Channel {
 	releases := []updates.State{
+		{ID: "v1.56.1", Tag: "v1.56.1", Migration: "populate-schema-tables"},
 		{ID: "v1.54.0", Tag: "v1.54.0", Migration: "populate-schema-tables"},
 		{ID: "v1.52.0", Tag: "v1.52.0", Migration: "add-index-for-transaction-gc"},
 		{ID: "v1.51.1", Tag: "v1.51.1", Migration: "add-index-for-transaction-gc"},
@@ -96,6 +97,7 @@ func postgresChannel() updates.Channel {
 		{ID: "v1.2.0", Tag: "v1.2.0", Migration: "add-transaction-timestamp-index"},
 	}
 	edgePatterns := map[string]string{
+		"v1.54.0":        ">=1.56.1",
 		"v1.52.0":        ">=1.54.0",
 		"v1.51.1":        ">=1.52.0",
 		"v1.49.2":        ">=1.51.1",
@@ -160,6 +162,7 @@ func postgresChannel() updates.Channel {
 
 func crdbChannel() updates.Channel {
 	releases := []updates.State{
+		{ID: "v1.56.1", Tag: "v1.56.1", Migration: "populate-schema-tables"},
 		{ID: "v1.54.0", Tag: "v1.54.0", Migration: "populate-schema-tables"},
 		{ID: "v1.52.0", Tag: "v1.52.0", Migration: "add-expiration-support"},
 		{ID: "v1.51.1", Tag: "v1.51.1", Migration: "add-expiration-support"},
@@ -211,6 +214,7 @@ func crdbChannel() updates.Channel {
 		{ID: "v1.2.0", Tag: "v1.2.0", Migration: "add-transactions-table"},
 	}
 	edgePatterns := map[string]string{
+		"v1.54.0":        ">=1.56.1",
 		"v1.52.0":        ">=1.54.0",
 		"v1.51.1":        ">=1.52.0",
 		"v1.49.2":        ">=1.51.1",
@@ -273,6 +277,7 @@ func crdbChannel() updates.Channel {
 
 func mysqlChannel() updates.Channel {
 	releases := []updates.State{
+		{ID: "v1.56.1", Tag: "v1.56.1", Migration: "identifiers_case_sensitive"},
 		{ID: "v1.54.0", Tag: "v1.54.0", Migration: "identifiers_case_sensitive"},
 		{ID: "v1.52.0", Tag: "v1.52.0", Migration: "add_expiration_to_relation_tuple"},
 		{ID: "v1.51.1", Tag: "v1.51.1", Migration: "add_expiration_to_relation_tuple"},
@@ -318,6 +323,7 @@ func mysqlChannel() updates.Channel {
 		{ID: "v1.7.0", Tag: "v1.7.0", Migration: "add_unique_datastore_id", Deprecated: true},
 	}
 	edgePatterns := map[string]string{
+		"v1.54.0": ">=1.56.1",
 		"v1.52.0": ">=1.54.0",
 		"v1.51.1": ">=1.52.0",
 		"v1.49.2": ">=1.51.1",
@@ -374,6 +380,7 @@ func mysqlChannel() updates.Channel {
 
 func spannerChannel() updates.Channel {
 	releases := []updates.State{
+		{ID: "v1.56.1", Tag: "v1.56.1", Migration: "populate-schema-tables"},
 		{ID: "v1.54.0", Tag: "v1.54.0", Migration: "populate-schema-tables"},
 		{ID: "v1.51.1", Tag: "v1.52.0", Migration: "add-expiration-support"},
 		{ID: "v1.49.2", Tag: "v1.51.1", Migration: "add-expiration-support"},
@@ -419,6 +426,7 @@ func spannerChannel() updates.Channel {
 		{ID: "v1.8.0", Tag: "v1.8.0", Migration: "add-metadata-and-counters"},
 	}
 	edgePatterns := map[string]string{
+		"v1.54.0":        ">=1.56.1",
 		"v1.51.1":        ">=1.54.0",
 		"v1.49.2":        ">=1.51.1",
 		"v1.48.0":        ">=1.49.2",
@@ -475,6 +483,7 @@ func spannerChannel() updates.Channel {
 
 func memoryChannel() updates.Channel {
 	releases := []updates.State{
+		{ID: "v1.56.1", Tag: "v1.56.1"},
 		{ID: "v1.54.0", Tag: "v1.54.0"},
 		{ID: "v1.52.0", Tag: "v1.52.0"},
 		{ID: "v1.51.1", Tag: "v1.51.1"},